

'''simple docstring'''






from collections.abc import Generator


def 						_A	(       ):






 """simple docstring"""



 __lowercase    ,      __lowercase				    =					0, 1
 while True:
  __lowercase    ,      __lowercase				    =					b, a + b
  yield b


def 						_A	(       A__ = 1000 ):






 """simple docstring"""



 __lowercase				    =					1
 __lowercase				    =					fibonacci_generator()
 while len(str(next(A__ ) ) ) < n:
  answer += 1
 return answer + 1


if __name__ == "__main__":
 print(solution(int(str(input()).strip())))


A						=			'\n# Transformers installation\n! pip install transformers datasets\n# To install from source instead of the last release, comment the command above and uncomment the following one.\n# ! pip install git+https://github.com/huggingface/transformers.git\n'

A						=			[{'type': 'code', 'content': INSTALL_CONTENT}]
A						=			{
    '{processor_class}': 'FakeProcessorClass',
    '{model_class}': 'FakeModelClass',
    '{object_class}': 'FakeObjectClass',
}